Toyota Prius Vs BMW 520d.

The Toyota hybrid is hailed as an eco-paragon, so how does it fare against a big BMW?

Times Online.

To find out we set a challenge: to drive a Prius to Geneva using motorways and town driving. The direct route is 460 miles but we drove almost 100 miles further to give the Prius the advantage of running in urban conditions where its petrol-electric drivetrain comes into its own.

We took along a conventionally powered car – a diesel BMW executive saloon – for comparison and drove both cars an identical number of miles (545). Continue reading Toyota Prius Vs BMW 520d.

Citroen C3 HDi: Quick test

By: Gordan Lomas. SMH.

There are the odd examples of why hybrids are under the pump in certain quarters.

Resale and battery issues aside, there has always been much conjecture about the virtues, environmental or otherwise about petrol/electric hybrids, particularly as there are some small diesel cars around these days that weaken the case for buying a hybrid for reasons of fuel economy.

Prime case is Citroen’s C3 HDi. There is now a nifty 1.6-litre diesel sitting pretty in the nose of the cute C3 — and it delivers quite a bit of punch once the revs rise beyond 2000rpm. Continue reading Citroen C3 HDi: Quick test

Diesel FG Falcon on the cards.

By: Gordan Lomas. The Daily Telegraph.

New Ford Australia chief Bill Osborne says he would have made the FG diesel variant had he been at the helm earlier.

Osborne, who took over two months ago, confirms a diesel engine, almost certainly a reworked version of the PSA group’s unit used by Peugeot, Jaguar and Land Rover, will be dropped into Falcons and Territorys in 2010. Continue reading Diesel FG Falcon on the cards.

Road Test: Renault Megane Expression. 1.9 Dci

With its focus on safety, comfort and economy, Renault’s turbo-diesel Megane 1.9 dCi makes a lot of sense.

By: Cameron McGavin. The Age.

  • Diesel engine is gutsy and economical
  • Quiet and comfortable ride
  • Competent handling
  • Classy and comfy cabin
  • Loads of toys and safety gear
  • Bad

Little diesels.

Lightweight cars with exceptional fuel economy from their small diesel engines

By: Julian Edgar, AutoSpeed.

World’s Smallest Diesel

Click for larger image

The DaimlerChrysler Smart FourTwo features the world’s smallest direct injection diesel engine. The 800c turbo 3-cylinder develops 33kW at just 3800 rpm.

Over the European fuel test cycle, the FourTwo diesel engine gives fuel economy of 3.3 litres/100km and emits just 88 grams of CO2 per kilometre.

Fuel injection pressure is 1600 Bar and 7-hole injectors are used. A large amount of exhaust gas is recirculated – as much as 60 per cent of exhaust gases are cooled and then returned to the combustion chambers.

Click for larger image

As is the case with other current direct injection engines, the electronically-controlled diesel uses a pilot injection squirt that ignites and preheats the cylinder, reducing noise emissions.

A tiny turbo is fitted. The compressor has a diameter of only 33mm but it rotates at up to 280,000 rpm. A maximum boost pressure of 1.2 Bar is used. The small turbo and diesel configuration allows for low-rpm torque development – 85Nm is available at just 1500 rpm!

However, the 770kg car is abysmally slow – 100 km/h comes up in a fraction under 20 seconds and top speed is only 135 km/h. Continue reading Little diesels.

DieselNews TECH: Diesel LPG – An Amazing Breakthrough

A win/win story

At a glance…

  • Better power
  • Reduced fuel cost
  • Better emissions
  • Subsidised by the government!

By Julian Edgar, http://www.autospeed.com.au

We’ve never seen anything like it. A 25 per cent increase in power across the whole rev range, reduced fuel costs, better exhaust gas emissions – and the government will pay half the cost of the work! Read that again – the Australian government will pay half the cost of the performance modification!

So what the hell are we talking about?

Adding LPG fuelling to a diesel, that’s what. And any type of diesel!

It’s one of the most amazing modifications we’ve covered in nearly a decade. Continue reading DieselNews TECH: Diesel LPG – An Amazing Breakthrough

DieselNews Tech: Diesel intercooling. There’s important differences to petrol engine turbos

By Tim White and Julian Edgar. http://www.autospeed.com.au

For forced aspirated cars, intercooling is one of the most vital considerations. In fact, after ensuring that you get plenty of boost over as wide an engine load range as possible, and there’s the right fuel and (in petrol engines) ignition timing, intercooling is the key to making power. That applies whether you’re talking an Impreza WRX, Falcon XR6 Turbo – or a diesel passenger car.

But in other respects, diesels are different. Simply, the intercooling approach that works on a high performance petrol engine car does not necessarily work on a diesel turbo. Let’s take a look. Continue reading DieselNews Tech: Diesel intercooling. There’s important differences to petrol engine turbos